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Laing E14 Spa Circulation Pump — 230V 1-1/2″ MBT Buttress Thread | 73348

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�� Laing E14 Spa Circulation Pump — 230V 1-1/2″ MBT Buttress Thread | 73348 High-flow 230V ECM circulation with 1-1/2″ buttress thread connections for larger spa plumbing systems ♨️ Product Overview The Laing E14 (73348) is a 230V, single-speed, high-flow circulation pump with 1-1/2″ Male Buttress Thread (MBT) connections — the largest and highest-flow pump in the Laing E-series family, delivering up to 36 GPM at just 110 watts. Unlike the smaller E10 models that use barb or MPT connections, the E14 is designed for spas with 1-1/2″ plumbing systems — the standard in Master Spas, LA Spas, Clearwater Spas, Artesian Spas, Marquis Spas, Hydropool, and many other brands that require high-volume water circulation through larger plumbing. Built with the same high-efficiency Electronically Commutated (EC) permanent magnet spherical motor found across the Laing lineup, the E14 draws just 0.45 amps at 110 watts while running at 2,100 RPM — consuming 40% less energy than standard 48-frame induction motor circulation pumps. The patented sealless, shaftless design with captured O-ring sealing and a magnetically driven open impeller means there is no mechanical seal to leak, wear, or replace. Built-in dry run protection via embedded software automatically shuts the pump down if no water is detected, while automatic overload protection and low in-rush current further safeguard the motor. The E14 features a lock ring volute with a wet end that rotates 90° — positioning the discharge at either 12 o’clock (top) or 3 o’clock (side) to align with existing plumbing. Weighing less than 5 lbs and measuring approximately 5.8″ × 5.4″ × 6.0″, the E14 maintains the compact, lightweight form factor the Laing E-series is known for. Includes a 4-foot AMP cord with 4-pin AMP connector. Unions are sold separately — 1-1/2″ female buttress thread to 1-1/2″ slip unions with 1-7/8″ O-rings are available from Parts4Tubs. ⚠️ 230V ONLY: This pump operates on 230V power. Do NOT connect to a 115V circuit. Verify the voltage on your existing pump label before ordering. �� E14 vs. E10: The E14 is a completely different pump from the E10 — not just a larger connection version. The E14 delivers 36 GPM (vs E10’s 15 GPM), uses 1-1/2″ MBT connections (vs barb or MPT), draws 110 watts at 2,100 RPM (vs 71W at 3,200 RPM), and has a maximum head of 10.5 feet (vs 20 feet). If your spa uses 3/4″ or 1″ barb/MPT connections, you need an E10 model instead. ⭐ Key Features ✅ 36 GPM Maximum Flow — Highest flow rate in the Laing E-series — designed for high-volume spa circulation ✅ 1-1/2″ Male Buttress Thread (MBT) — Standard connection for larger spa plumbing systems ✅ ECM Permanent Magnet Motor — 110 watts at 0.45 amps / 2,100 RPM — 40% less energy than induction motors ✅ Sealless, Shaftless, Leak-Proof — Patented magnetically driven design with captured O-ring sealing ✅ Dry Run Protection — Embedded software shuts down pump if no water detected — prevents damage ✅ Rotatable Wet End — 90° — Discharge positions at 12 o’clock or 3 o’clock for plumbing alignment ✅ Whisper-Quiet — Virtually silent 24/7 continuous operation ✅ Lock Ring Volute — Secure wet end fastening with captured O-ring design ✅ Automatic Overload Protection — Built-in motor protection with low in-rush current ✅ 4′ AMP Cord with 4-Pin Connector Included — Plug-and-play for spas with AMP-style wiring ✅ Mounting Bracket Included — Adjustable to 4 different discharge angles ✅ 1-Year Manufacturer’s Warranty — Full warranty coverage �� Technical Specifications Specification Value Manufacturer Laing / Xylem / Goulds Series E14 (Ecocirc) Part Number 73348 Laing Model E14-NSTNNN2W-10 (also E14-NSTNDNN2W-02, E14-NSTNDNN2W-03, E14-NSTN2W-10) Laing OEM Number 6080U0014 (also 6080U0015 newer revision) Pump Type Circulation Pump — Single Speed Motor Type ECM — Electronically Commutated AC/DC/AC Spherical Motor (Canned Spherical Type) — Permanent Magnet Horsepower 1/40 HP (per Parts4Tubs) Input Power 110 watts (230V / 60Hz) Voltage 230V Frequency 50/60 Hz Amperage 0.45A RPM 2,100 Flow Rate (Max) 36 GPM Maximum Head 10.5 feet Maximum Working Pressure 50 PSI Connection Type 1-1/2″ Male Buttress Thread (MBT) — intake and discharge Suction Connection OD Approximately 2-7/16″ Suction Center suction Discharge Side discharge Discharge Rotation Wet end rotates 90° — 12 o’clock (top) or 3 o’clock (side) Rotation Counter-clockwise (viewed from motor end) Impeller Type Open — magnetically driven — clog resistant Seal None — patented sealless, shaftless design with captured O-ring Volute Fastening Lock ring Wet End Thermoplastic Maximum Temperature 140°F (60°C) Mounting Horizontal or vertical (motor end down) — bracket adjustable to 4 discharge angles Dimensions (L × W × H) Approximately 5.8″ × 5.4″ × 6.0″ (147 × 137 × 152 mm) Weight Less than 5 lbs Cord ✅ 4′ (48″) AMP cord with 4-pin AMP connector INCLUDED Mounting Bracket ✅ INCLUDED — adjustable to 4 discharge angles Unions ⚠️ SOLD SEPARATELY — 1-1/2″ female buttress thread to 1-1/2″ slip Union O-Rings ⚠️ SOLD SEPARATELY — 1-7/8″ diameter Dry Run Protection ✅ Embedded software — auto-shutdown Overload Protection ✅ Automatic motor overload protection In-Rush Current Low in-rush current design Duty Cycle Continuous — designed for 24/7 operation Warranty 1-year manufacturer’s warranty ⚡ Electrical Requirements Electrical Spec Requirement Supply Voltage 230V Frequency 50/60 Hz Phase Single Phase Amperage 0.45A Input Wattage 110W RPM 2,100 Cord 4′ (48″) — AMP cord with 4-pin AMP connector — INCLUDED Motor Type ECM AC/DC/AC Spherical — Permanent Magnet Overload Protection Automatic — built-in In-Rush Current Low — soft start design E14 vs. E10 Motor Comparison Specification E10 (230V) E14 (THIS PUMP) Input Wattage 71W 110W Amperage See manufacturer docs 0.45A RPM 3,200 2,100 Flow Rate (Max) 15 GPM 36 GPM Max Head 20 ft 10.5 ft Connections 3/4″ barb, 1″ barb, or 3/4″ MPT 1-1/2″ MBT �� The E14 trades head pressure for flow volume — running at lower RPM (2,100 vs 3,200) but moving more than twice the water (36 GPM vs 15 GPM) through its larger 1-1/2″ plumbing. Choose the E14 for spas with 1-1/2″ plumbing that need high-volume circulation. ⚠️ CRITICAL: This is a 230V pump ONLY. The E14 is only available in 230V. There is no 115V version of the E14. Always verify voltage on your existing pump label before ordering. ⚠️ AMP CORD NOTE: This pump includes a 4-pin AMP connector. If your spa uses a different plug type (such as Gecko in.link), you may need to swap the plug from your old pump or purchase an adapter. Some customers report needing to splice the cord to match their spa’s wiring harness. ⚠️ ELECTRICAL SAFETY: All electrical installations must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and local building codes. Hot tubs require GFCI (Ground-Fault Circuit Interrupter) protection. A dedicated circuit is required — do not share with other appliances. �� Compatibility Guide Compatible Spa Brands — Confirmed Brand Compatibility Part Number / Notes Master Spas ✅ Confirmed — OEM X400825, X320565 — 2009 models LA Spas ✅ Confirmed — OEM EL-64109, EL-64109-1 Clearwater Spas ✅ Confirmed — OEM 6080U0014, 5EL-64109-1 Artesian Spas ✅ Confirmed — OEM 21-0008-19 (AMP cord); 21-0009-19 (in.link cord) Marquis Spas ✅ Confirmed Per HotTubOutpost Hydropool ✅ Confirmed 6505116 Dynasty Spas ✅ Confirmed LMB07102983 Saratoga Spas ✅ Confirmed Per HotTubOutpost Royal Spas ✅ Confirmed Per HotTubOutpost Down East Spas ✅ Confirmed Per tubs.parts Wellis Spas ✅ Confirmed ACM0452 Arctic Spas ✅ Confirmed 140200 Canadian Spa ✅ Confirmed 6080C0016 Coleman ✅ Confirmed Via LA Spas EL-64109 cross-reference California Cooperage ✅ Confirmed Via LA Spas EL-64109 cross-reference Elite Spas ✅ Confirmed Via LA Spas EL-64109 cross-reference Any 230V spa with 1-1/2″ MBT circ pump ✅ Universal fit Same voltage and connection type This Pump Replaces — Previous E14 Models Old Model / Part Number Notes 73229 Previous Laing E14 revision — direct replacement 37749 Previous Laing E14 revision — direct replacement 73329 Previous Laing E14 revision — direct replacement 73359 LA Spas E14 variant — direct replacement E14-NSTNDNN2W-02 Older Laing model revision E14-NSTNDNN2W-03 Older Laing model revision Plumbing Compatibility — Connection Type Is Critical Your Existing Connection This Pump Notes 1-1/2″ MBT (buttress thread) ✅ Direct fit Standard E14 connection — unions sold separately 3/4″ barb ❌ Wrong type/size Use E10 series (73979 for 230V, 73989 for 115V) 1″ barb ❌ Wrong type/size Use E10 series (74079 for 230V, 74069 for 115V) 3/4″ MPT (pipe thread) ❌ Wrong type/size Use E10 series (73999 for 230V, 74009 for 115V) Laing E-Series Family Comparison Series Part Number Voltage Connection Max Flow Max Head Watts Best For E14 73348 230V 1-1/2″ MBT 36 GPM 10.5 ft 110W ✅ THIS PUMP — Large spas with 1-1/2″ plumbing E10 73979 230V 3/4″ Barb 15 GPM 20 ft 71W Standard spas with 3/4″ tubing E10 74079 230V 1″ Barb 15 GPM 20 ft 71W Spas with 1″ tubing E10 73999 230V 3/4″ MPT 15 GPM 20 ft 71W Spas with 3/4″ threaded PVC E10 73989 115V 3/4″ Barb 15 GPM 20 ft 62W 115V spas with 3/4″ tubing �� Alternate Part Numbers Primary Part Numbers Part Number Notes 73348 Laing primary part number (THIS PUMP) 6080U0014 Laing OEM manufacturer number 6080U0015 Laing newer revision OEM number E14-NSTNNN2W-10 Laing model number E14-NSTNDNN2W-02 Laing earlier model revision E14-NSTNDNN2W-03 Laing model revision E14-NSTNDNN2W-05 Laing model revision E14-NSTN2W-10 Laing model variant E14-NST2NNN2W-10 Laing model variant E14-NST2NW-10 Laing model variant LHB07100142 Laing catalog reference LHB07102983 Laing catalog reference LMB07102983 Laing/Dynasty catalog reference 733886733488 UPC / barcode Previous Models Replaced Part Number Notes 73229 Previous E14 revision — direct replacement 73329 Previous E14 revision — direct replacement 37749 Previous E14 revision — direct replacement 73359 LA Spas E14 variant — direct replacement Master Spas Cross-References Part Number Notes X400825 Master Spas primary circ pump part number X320565 Master Spas alternate/older part number 6080U0015 Master Spas OEM reference LA Spas / Clearwater Cross-References Part Number Notes EL-64109 LA Spas primary part number EL-64109-1 LA Spas variant (also Coleman, California Cooperage, Elite Spas) 5EL-64109-1 Clearwater Spas variant 6080U0014 Clearwater/LA Spas OEM reference HIFLW73359 LA Spas cross-reference HydroQuip Cross-References Part Number Notes 10-0107 HydroQuip catalog number 10-0107-K HydroQuip kit format Artesian Spas Cross-References Part Number Notes 21-0008-19 Artesian Spas — with AMP cord 21-0009-19 Artesian Spas — with Gecko in.link cord (different cord type) Brand-Specific Cross-References Part Number Brand Notes 6505116 Hydropool / Clair Azur OEM reference ACM0452 Wellis Spas OEM reference 140200 Arctic Spas OEM reference 6080C0016 Canadian Spa OEM reference LMB07102983 Dynasty Spas OEM reference 301524 Distributor reference Per hotubparts 900800681 Distributor reference Per hotubparts/Fruugo P2450 Industry reference Per SpaCare/PartsForSpas Industry / Distributor Cross-References Part Number Notes 1-00-0214 Industry reference 9338-40 Laing catalog number 34-158-1500 Horizon reference 15-375-0014 Distributor reference 6080U0032 Distributor reference 6050C0007 Distributor reference 6050C0005 Distributor reference 6080U0016 Distributor reference LX Lower-Cost Alternative Part Number Notes WE14-240 LX brand E14 equivalent (10-WE14-240) — larger physical size — verify fitment Grundfos Replacement Alternative Part Number Notes 10-0138-KIT Grundfos universal 230V circ pump kit — uses barb connections with adapters (different connection type) ��️ Installation Requirements What’s in the Box Item Included Notes Laing E14 circulation pump ✅ Yes Complete pump assembly with lock ring volute 4′ (48″) AMP cord ✅ Yes 4-pin AMP connector plug Mounting bracket ✅ Yes Adjustable to 4 discharge angles 1-1/2″ MBT unions ⚠️ Typically NOT included Purchase separately — verify with Parts4Tubs Union O-rings ⚠️ Typically NOT included 1-7/8″ diameter — purchase separately Mounting Requirement Specification Mounting Position Horizontal OR vertical (motor end down ONLY) Mounting Method Bracket adjustable to 4 discharge angles Wet End Rotation Rotates 90° — loosen lock ring nut, rotate volute to 12 o’clock or 3 o’clock Do NOT Mount Motor end UP — only horizontal or motor end down Access Allow clearance for union connections and maintenance Plumbing Connection Size Notes Intake (suction) 1-1/2″ MBT (center suction) Approximately 2-7/16″ OD at thread Discharge 1-1/2″ MBT (side discharge) Approximately 1-7/8″ OD at thread Unions 1-1/2″ female buttress to 1-1/2″ slip Sold separately — use with 1-7/8″ O-rings Plumbing 1-1/2″ PVC pipe or hose Through union connections Installation Notes ⚠️ Verify Voltage FIRST: This pump operates on 230V ONLY. There is no 115V version of the E14. ⚠️ Unions Sold Separately: This pump typically ships without unions. Order 1-1/2″ female buttress thread to 1-1/2″ slip unions and 1-7/8″ O-rings separately. Verify with Parts4Tubs at time of order. ⚠️ AMP Cord Compatibility: This pump includes a 4-pin AMP connector. If your spa uses a different plug type, you may need to swap the plug from your old pump or splice wires to match your wiring harness. ⚠️ Wet End Orientation: The volute can be rotated 90° to position the discharge at 12 o’clock (top) or 3 o’clock (side). Loosen the lock ring nut with a wrench, rotate, and re-tighten. ⚠️ First Startup: Low in-rush current design. If the pump detects no water, it will shut down automatically (dry run protection) and retry. ⚠️ Motor Orientation: Horizontal or vertical with motor end DOWN only. Never mount motor end up. ⚠️ Maximum Water Temperature: 140°F (60°C). Do not exceed. ⚠️ GFCI Protection Required: All spa installations require GFCI protection per the NEC. ⚠️ Bonding & Grounding Required: Per NEC requirements. ⚙️ Maintenance Guide Routine Maintenance Task Frequency Notes Check for water flow Monthly Verify circulation is active Inspect union connections Monthly Check for leaks at buttress thread unions and O-rings Listen for unusual noise Monthly Should be virtually silent Inspect AMP cord and connector Quarterly Check for corrosion or damage Check mounting bracket Quarterly Ensure pump is secure Inspect O-rings Quarterly Replace if cracked, flat, or leaking Verify GFCI operation Monthly Press test button to check Warning Signs — Replace Pump If: Pump fails to start or hums without rotation Unusual noise (clicking, grinding, buzzing) No water circulation despite pump running Motor trips breaker or GFCI repeatedly Pump vibrating excessively Dry run protection cycling repeatedly (if plumbing is clear, pump may need replacement) Water leaking from pump body (not from unions) Error codes on spa controller related to circulation (FLO, FL1, etc.) Sealless Design Advantage The Laing E14’s patented sealless, shaftless design with captured O-ring sealing means there is no mechanical shaft seal to fail. If water appears at this pump, check union O-rings and union tightness first — these are the most common leak points. The only replacement part for the E14 pump body is the rotor assembly. �� Ideal Applications Application Suitability Notes ♨️ 230V spa with 1-1/2″ MBT circ pump ✅ Yes — Primary use Direct replacement for all 1-1/2″ buttress thread systems ♨️ Master Spas circ pump (2009 ) ✅ Yes — OEM Replaces X400825, X320565 ♨️ LA Spas circ pump ✅ Yes — OEM Replaces EL-64109, EL-64109-1 ♨️ Clearwater Spas circ pump ✅ Yes — OEM Replaces 5EL-64109-1 ♨️ Artesian Spas circ pump ✅ Yes — OEM Replaces 21-0008-19 (AMP), 21-0009-19 (in.link) ♨️ Marquis / Hydropool / Dynasty circ pump ✅ Yes — Confirmed 230V with 1-1/2″ MBT ♨️ Arctic / Wellis / Canadian Spa circ pump ✅ Yes — Confirmed 230V with 1-1/2″ MBT ♨️ Previous E14 replacement (73229, 37749) ✅ Yes — Direct upgrade Drop-in replacement for all earlier E14 models ♨️ High-flow heater circulation ✅ Yes — Designed for 36 GPM handles high-flow heater requirements ♨️ Ozone / saltwater treatment circulation ✅ Yes — Designed for Per Pool-Spa-Supplies applications list ♨️ Spas with 3/4″ or 1″ barb connections ❌ No — Wrong type Use E10 series (73979, 74079, etc.) ♨️ 115V spa systems ❌ No — Wrong voltage E14 is 230V only — no 115V version exists ❓ Frequently Asked Questions Q: What is the difference between the E14 and the E10? A: The E14 is a larger, higher-flow pump designed for spas with 1-1/2″ plumbing. The E14 delivers 36 GPM at 110 watts through 1-1/2″ MBT connections, while the E10 delivers 15 GPM at 71 watts through 3/4″ or 1″ connections. The E14 has lower maximum head pressure (10.5 ft vs 20 ft). They are completely different pumps — not interchangeable. Q: What spas use this pump? A: The E14 is used in Master Spas (2009 ), LA Spas, Clearwater Spas, Artesian Spas, Marquis Spas, Hydropool, Dynasty Spas, Saratoga Spas, Royal Spas, Down East Spas, Wellis, Arctic Spas, Canadian Spa, Coleman, California Cooperage, and Elite Spas, among others. Q: Are unions included? A: Typically NOT included — verify with Parts4Tubs at time of order. Purchase 1-1/2″ female buttress thread to 1-1/2″ slip unions and 1-7/8″ O-rings separately if needed. Q: What cord/plug does this pump use? A: It includes a 4-foot AMP cord with a 4-pin AMP connector. If your spa uses a different connector type (such as Gecko in.link), you may need to swap the plug from your old pump or splice wires. For Artesian Spas requiring an in.link plug, see part number 21-0009-19. Q: Does this replace the 73229 and 37749? A: Yes — the 73348 is the current version that replaces all previous E14 models including 73229, 37749, 73329, and 73359. Q: Does this pump have a shaft seal? A: No — the Laing E14 uses a patented sealless, shaftless design with a captured O-ring. There is no mechanical seal to leak or replace. If leaking occurs, check union O-rings first. Q: What is the maximum flow rate? A: Up to 36 GPM depending on system conditions. Maximum head pressure is 10.5 feet. Maximum working pressure is 50 PSI. Q: Can I mount this pump vertically? A: Yes — horizontal or vertical with motor end down only. The mounting bracket adjusts to 4 discharge angles, and the wet end rotates 90° for additional plumbing alignment flexibility. Q: How quiet is this pump? A: Virtually silent — designed for 24/7 continuous operation. The E14 uses the same whisper-quiet ECM motor technology as the E10 series. Q: Is there a 115V version of the E14? A: No — the E14 is 230V only. There is no 115V E14 model available. Q: What is the maximum water temperature? A: 140°F (60°C). Do not exceed. Q: Can the wet end be rotated? A: Yes — the volute rotates 90° (12 o’clock or 3 o’clock position). Loosen the lock ring nut with a wrench, rotate to desired position, and re-tighten. Q: Is there a lower-cost alternative? A: The LX WE14-240 is a lower-cost alternative, though it is physically larger — verify fitment in your equipment bay before ordering. The Grundfos 10-0138-KIT is a universal 230V option but uses barb connections (different type). Q: Do I need a GFCI breaker? A: Yes — GFCI protection is required by the NEC for all hot tub and spa installations. Q: What warranty is included? A: 1-year manufacturer’s warranty. Contact Parts4Tubs for full terms �� Why Choose the Laing E14 73348 ✅ Highest Flow in the E-Series — 36 GPM — designed for larger spas with 1-1/2″ plumbing ✅ OEM Across Major Brands — Master Spas, LA Spas, Clearwater, Artesian, Marquis, Hydropool, Dynasty, Arctic, Wellis ✅ ECM Permanent Magnet Motor — 110 watts at 0.45 amps — 40% less energy than induction motors ✅ Patented Sealless Design — No mechanical seal — captured O-ring sealing — nothing to replace ✅ Built-In Protections — Dry run (embedded software), overload, low in-rush current ✅ Rotatable Wet End — 90° rotation for flexible plumbing alignment ✅ Lock Ring Volute — Secure fastening with captured O-ring ✅ Whisper-Quiet — Virtually silent 24/7 continuous operation ✅ Compact & Lightweight — Less than 5 lbs — fits in tight equipment bays ✅ 4′ AMP Cord & Bracket Included — Plug-and-play installation ✅ Proven Reliability — Laing (Xylem/Goulds) — world-renowned circulation pump manufacturer ✅ 1-Year Manufacturer’s Warranty — Full warranty coverage �� Why Buy From Parts4Tubs ✅ Fast shipping across the United States ✅ Expert advice from spa and hot tub specialists ✅ Competitive pricing ✅ Full warranty support ✅ Hassle-free returns ✅ 1-1/2″ female buttress thread unions and 1-7/8″ O-rings available ✅ Dedicated customer service team �� Summary The Laing E14 (73348) is the highest-flow pump in the Laing E-series — a 230V circulation pump with 1-1/2″ Male Buttress Thread (MBT) connections delivering up to 36 GPM at just 110 watts / 0.45 amps / 2,100 RPM. Designed for larger spas with 1-1/2″ plumbing systems used by Master Spas, LA Spas, Clearwater, Artesian, Marquis, Hydropool, Dynasty, Arctic, Wellis, and many more. Features the same high-efficiency ECM permanent magnet spherical motor with patented sealless, shaftless, leak-proof design, captured O-ring sealing, and lock ring volute. Built-in dry run protection, overload protection, and low in-rush current. Wet end rotates 90° for flexible discharge orientation. Less than 5 lbs, approximately 5.8″ × 5.4″ × 6.0″, center suction / side discharge, counter-clockwise rotation, 140°F maximum temperature, 50 PSI maximum working pressure, 10.5 ft maximum head. Includes 4′ AMP cord with 4-pin connector and mounting bracket. Unions sold separately. 230V only — no 115V version exists. Replaces all previous E14 models (73229, 37749, 73329, 73359). 1-year manufacturer’s warranty. Available now at Parts4Tubs. Showing 1 – 5 of 5 results Showing all 5 results Showing the single result No results found Sort by Price low to high Sort by Popularity Sort by Rating Sort by Price low to high Sort by Price high to low Sort by Newness Sort by Name A - Z Sort by Name Z - A Filters Sort results Reset Apply Magic Plastics Union 0602-15 (1.5″ Pump Union) | 1-1/2″S x 1-1/2″FBTUnion, Pump, Magic, 1-1/2"S x 1-1/2"FBT (Industry Standard) w/ O-Ring $6.36 Max: 379 Min: 1 Step: 1 Add to cartMagic Plastics Union 0602-20 (2″ Pump Union) | 2″S x 2″FBT w/ O-RingUnion, Pump, Magic, 2"S x 2"FBT (Industry Standard) w/ O-Ring $8.00 Max: 953 Min: 1 Step: 1 Add to cartWaterway Union 400-6010 | 2-1/2″ Union Nut with 2-1/2″ Slip tailpiece and o-ring (2.5″ union)Union, Pump, Waterway, 2-1/2"FBT x 2-1/2"S $14.77 Max: 135 Min: 1 Step: 1 Add to cart1 Speed Pump / Blower / AMP Cord | 21086Amp Plug, Pump, 1-Speed, 14/3, 4-Pin, 5' Cord, White $24.71 Max: 435 Min: 1 Step: 1 Add to cartBalboa Amp Plug 21087 (For 2 Speed Pumps)Amp Plug, Pump 1 (2-Speed) 14/4, 72" Long, White $31.72 Max: 160 Min: 1 Step: 1 Add to cart Hot Tub Pump Collar & Union Size Chart Hot Tub Pump Collar & Union Size Chart Imperial & Metric Specifications Union Size Collar Size Thread OD Union OD O-Ring Size 1.5" Female ButtressThread (FBT) 2.5" / 64mm (Tip to Tip)Measurement 2-1/2" 64mm 2-13/16" 71mm 2-5/16" OD 59mm 2" Female ButtressThread (FBT) 3.1" / 78mm (Tip to Tip)Measurement 3-1/16" 78mm 3-3/8" 81mm 2-15/16" OD 75mm 2.5" Female ButtressThread (FBT) 3.6" / 91mm (Tip to Tip)Measurement 3-5/8" 91mm 4-1/4" 108mm 3-7/16" OD 87mm Important Notes The union "size" (1.5", 2", 2.5") is nominal and doesn't correspond to any actual measurement. Collar size is measured from thread tip to thread tip on the pump outlet. Most hot tub pumps use Female Buttress Thread (FBT) - 98% of applications. O-ring gaskets may vary between manufacturers - measure your existing gasket for accuracy. How do I Replace a Hot Tub Pump? Here's a general step-by-step guide on how to replace a hot tub pump. Keep in mind that the specific steps may vary depending on your hot tub's make and model, so it's essential to consult your hot tub's manual for model-specific instructions. If you're not comfortable with this procedure, it's a good idea to seek professional assistance. Materials You'll Need: Replacement pump Pipe wrench Adjustable wrench Screwdriver Pipe sealant (thread tape or plumber's putty) PVC primer and cement (if you have PVC plumbing) Teflon tape (for threaded connections) Procedure: Turn Off the Power: Before you begin, ensure the hot tub's power supply is turned off at the circuit breaker or disconnect switch. Safety should always be a priority when working with electrical components. Drain the Hot Tub: If your hot tub is not already empty, you'll need to drain it. Follow your hot tub's manual or manufacturer's instructions for proper draining. (You might not need to do this if you can lock the pump off with the gate valves) Locate the Pump: Identify the location of the existing pump in your hot tub. It's usually located near the equipment area or in a designated pump compartment. Disconnect the Electrical Wiring: Carefully disconnect the electrical wiring from the old pump. This typically involves removing the electrical conduit cover, unscrewing wire nuts, and disconnecting the wires from the terminals. Be sure to note the wire connections or take a picture for reference when connecting the new pump. Disconnect the Plumbing: Depending on your hot tub's plumbing setup, you'll need to disconnect the plumbing connections to the pump. Use a pipe wrench or adjustable wrench to loosen and remove the fittings. Be prepared for some water spillage when disconnecting the plumbing. Remove the Old Pump: Once the electrical and plumbing connections are detached, carefully remove the old pump from its mounting position. Some pumps may be secured with mounting brackets or bolts. Prepare the New Pump: If the new pump is not pre-assembled, you may need to attach fittings, unions, or adapters to match your hot tub's plumbing. Ensure that you use the appropriate sealant or Teflon tape on threaded connections to prevent leaks. Mount the New Pump: Position the new pump in the same location as the old one and secure it in place using the mounting brackets or bolts. Reconnect Plumbing: Reconnect the plumbing to the new pump, ensuring that all connections are tight and secure. If your hot tub uses PVC plumbing, use PVC primer and cement to bond the connections properly. Reconnect Electrical Wiring: Reconnect the electrical wiring to the new pump, following the notes or pictures you took earlier. Make sure all wires are properly connected and secure. Turn On the Power: Restore power to the hot tub by switching on the circuit breaker or reconnecting the disconnect switch. Test the Pump: Turn on the hot tub's pump to ensure that it's working correctly. Check for any signs of leaks or irregularities in the plumbing connections. Refill the Hot Tub: Once you've confirmed that the new pump is functioning properly, refill the hot tub with water. Check for Leaks: Inspect the plumbing connections for any leaks. If you find any, turn off the pump, drain the tub again, and reseal the connections as needed. Monitor: Keep an eye on the pump and plumbing for the next few days to ensure everything is functioning correctly and that there are no further issues. Remember that this is a general guideline, and the specific steps may vary based on your hot tub's design. If you're unsure or uncomfortable with any aspect of this process, please do get in touch, happy to help. How do I know what size hot tub pump I have? Determining the size of your hot tub pump is an important step when it comes to maintenance or replacement. To find out the size of your hot tub pump, follow these steps: Check the Manual: The easiest way to determine the size of your hot tub pump is to consult the owner's manual or user documentation that came with your hot tub. The manual typically contains detailed information about the specifications and components of your hot tub, including the pump. Look at the Pump Housing: If you don't have access to the manual or it doesn't provide the information you need, inspect the pump itself. Most hot tub pumps have a label or plate on the pump housing that displays essential details, including the pump's model number, manufacturer, and specifications. You can then send that to me or Google it. Measure the Pump: If the label is missing or damaged, you can measure the pump's dimensions. Measure the diameter of the pump's wet end (the part where the water flows) and the length of the wet end. These measurements can help identify the size and capacity of the pump. Consult the Manufacturer: If you can't find the information on the pump or in the manual, contact the hot tub manufacturer or a reputable dealer. Provide them with your hot tub's model and serial number, and they should be able to identify the correct pump size for your specific hot tub. Online Research: You can also search online using the pump's model number or hot tub's make and model. Many manufacturers provide detailed information about their products on their websites, and you may find specifications for your pump model. Once you have determined the size and specifications of your hot tub pump, you can proceed with maintenance, repairs, or replacement if necessary. Keep in mind that replacing a hot tub pump with the same size and capacity as the original is crucial to ensure proper water circulation and filtration in your hot tub. If you're unsure about any aspect of this process, get in touch, always happy to help.

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